Subversion Repositories mpeg2fpga

/*

 * vld_codes.v

 *

 * Copyright (c) 2007 Koen De Vleeschauwer.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 */

/*

 * vld_codes - parameters passed from vld to other modules.

 */

  parameter [1:0] /* chroma_format */

    CHROMA420     = 2'd1,

    CHROMA422     = 2'd2,

    CHROMA444     = 2'd3;

  parameter [1:0] /* picture structure */

    TOP_FIELD     = 2'd1,

    BOTTOM_FIELD  = 2'd2,

    FRAME_PICTURE = 2'd3;

  parameter [1:0] /* motion_type */

    MC_NONE       = 2'd0,

    MC_FIELD      = 2'd1,

    MC_FRAME      = 2'd2,

    MC_16X8       = 2'd2,

    MC_DMV        = 2'd3;

  parameter [1:0] /* mv_format */

    MV_FIELD      = 2'd0,

    MV_FRAME      = 2'd1;

  parameter [2:0] /* picture coding type, table 6-12 */

    I_TYPE        = 3'd1,

    P_TYPE        = 3'd2,

    B_TYPE        = 3'd3,

    D_TYPE        = 3'd4;

  parameter       /* dct_type */

    DCT_FIELD     = 1'd1,

    DCT_FRAME     = 1'd0;

  parameter [1:0] /* rld_cmd */

    RLD_DCT       = 2'd0,

    RLD_QUANT     = 2'd1,

    RLD_NOOP      = 2'd2;

/* not truncated */